440 Stainless Steel - Qinghe Steel

   

440 Stainless Steel Properties

Corrosion Resistance: 440 stainless steel is known for its excellent corrosion resistance in mild environments. It is resistant to corrosion from chemicals, solvents, and salts.

Wear Resistance: 440 stainless steel is known for its excellent wear resistance, making it a popular choice for applications that require high levels of wear resistance such as knives, bearings, and cutting tools.

Hardness: 440 stainless steel is a high-hardness material that can be heat-treated to achieve a hardness of up to 58 HRC. This property makes it suitable for applications that require high levels of hardness, such as cutting tools and industrial blades.

Weldability: 440 stainless steel is known for its poor weldability due to its high carbon content. It is not recommended for welding applications.

Magnetic Properties: 440 stainless steel is magnetic in all conditions.

Heat Resistance: 440 stainless steel has good heat resistance up to 260°C (500°F). It can be used in high-temperature applications such as furnace parts, heat exchangers, and exhaust systems.

Compostion

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	N
440C	min. max.	0.95 1.20	- 1	- 1	- 0.04	- 0.030	16.00 18.00	- 0.75	-	-

Mechanical Properties

Tempering Temperature (°C)	Tensile Strength (MPa)	Yield Strength 0.2% Proof (MPa)	Elongation (% in 50mm)	Hardness Rockwell (HR C)	Impact Charpy V (J)
Annealed*	758	448	14	269HB max#	-
204	2030	1900	4	59	9
260	1960	1830	4	57	9
316	1860	1740	4	56	9
371	1790	1660	4	56	9
* Annealed properties are typical for Condition A of ASTM A276# Brinell Hardness is ASTM A276 specified maximum for annealed 440A, B and C.

Physical Properties

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Coefficient of Thermal Expansion (mm/m/°C)			Thermal Conductivity(W/m.K)		Specific Heat 0-100°C (J/kg.K)	Electrical Resistivity (nW.m)
			0-100°C	0-200°C	0-600°C	at 100°C	at 500°C
440 C	7650	200	10.1	10.3	11.7	24.2	-	460	600